No cough but white phlegm in the throat may be due to chronic pharyngitis or chronic rhinitis, allergic rhinitis, need to improve the relevant examination, symptomatic treatment. 1. Chronic pharyngitis: can be caused by acute pharyngitis repeated episodes into chronic, long-term tobacco, alcohol or other harmful gas stimulation can also be induced by this disease. Often manifested as pharyngeal discomfort, pharyngeal dryness, pharyngeal itching, foreign body sensation, etc., the back wall of the pharynx often have viscous secretions. 2. Chronic rhinitis, allergic rhinitis: chronic rhinitis and allergic rhinitis, usually mucous and watery secretions, due to nasal secretions back into the throat, thus appearing throat with white phlegm symptoms. You can use sea salt water to rinse the nasal cavity to relieve the symptoms. If you don’t have a cough but always have white phlegm in your throat, it is recommended that you go to the hospital and get a clear diagnosis and follow the doctor’s instructions for medication.